// Problem: 
// Contest: 
// URL: 
// Memory Limit: 
// Time Limit: 
// #pragma GCC optimize("Ofast")
// #pragma GCC optimize("unroll-loops")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#include<bits/stdc++.h>
using namespace std;
#define int long long
inline int read(){
	int s=0,w=1;
	char ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')w=-1;ch=getchar();}
	while(ch>='0'&&ch<='9') s=s*10+ch-'0',ch=getchar();
	return s*w;
}
bool check(int x)
{
	vector<int> v;
	v.push_back(0);
	int tmp=0,t=x,n=0,l=1;
	while(x)
	{
		//tmp+=x%10;
		v.push_back(x%10);
		x/=10;
		n++;
	}
	vector<int> w(n+1);
	for(int i=1;i<=n;i++)w[i]=v[n-i+1];
	v=w;
	while(tmp<t)
	{
		tmp=0;
		for(int i=l;i<=l+n-1;i++)
		{
			tmp+=v[i];
		}
		v.push_back(tmp);
		l++;
	}
	return tmp==t;
}
signed main()
{
	int t=1;
//	cin>>t;
	while(t--)
	{
//		for(int i=1;i<1e7;i++)
//			if(check(i))cout<<setw(10)<<i;
//		cout<<check(197);
		cout<<7913837;
	}
	return 0;
}
